#include<stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
  const char *who = getenv("USER");
  if(strcmp(who,"weiliang") == 0)
  {
    printf("执行\n");
    return 0;
  }
  else 
  {
    printf("无权限访问\n");
    return 1;
  }
  //printf("PWD %s\n", getenv("PWD"));
  return 0;
}
